发明授权
- 专利标题: Positive electrode for secondary battery, secondary battery, and method for fabricating positive electrode for secondary battery
- 专利标题(中): 二次电池用正极,二次电池以及二次电池用正极制造方法
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申请号: US13973524申请日: 2013-08-22
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公开(公告)号: US09385366B2公开(公告)日: 2016-07-05
- 发明人: Masaki Yamakaji , Takahiro Kawakami , Mako Motoyoshi , Rika Yatabe
- 申请人: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- 申请人地址: JP Kanagawa-ken
- 专利权人: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- 当前专利权人: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- 当前专利权人地址: JP Kanagawa-ken
- 代理机构: Nixon Peabody LLP
- 代理商 Jeffrey L. Costellia
- 优先权: JP2012-186404 20120827
- 主分类号: H01M4/02
- IPC分类号: H01M4/02 ; H01M4/131 ; H01M4/04 ; H01M4/62 ; H01M4/1391 ; H01M4/136 ; H01M4/1397 ; H01M4/36 ; H01M4/505 ; H01M4/525 ; H01M4/587 ; H01M10/052
摘要:
A positive electrode for a secondary battery which enables both good battery characteristics and electrode strength at a predetermined level, a secondary battery, and a method for fabricating the positive electrode for a secondary battery are provided. The positive electrode for a secondary battery includes a current collector and an active material layer over the current collector. The active material layer includes an active material, graphene, and a binder. A carbon layer is on a surface of the active material. The proportion of the graphene in the active material layer is greater than or equal to 0.1 wt % and less than or equal to 1.0 wt %.
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